[PATCH 2/3] msvcrt: Use parse_double for wcstod.

[Erich E. Hoover]

This consolidates wcstod with strtod, which brings in precision fixes
and support for nan, inf, and hex values for msvcr140.

Best,
Erich

[Piotr Caban]

Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>